Information for Technologists

Software and Services

JHOVE2A next-generation framework and application for format-aware characterization, building on the succcess of the original JHOVE system. JHOVE2 generalizes the process of characterization to include signature-based identification, validation, feature extraction, and policy-based assessment.

NOID (Nice Opaque Identifiers)Noid provides minting, binding, and resolving services in support of preservation-ready identifiers. Persistent identifiers may be obtained by a committed provider with help from these kinds of identity services.Software download

Pairtrees for Collection StoragePairtree is a file system convention for the organization of a digital object store. Pairtrees have the advantage that many object operations, including backup and restore, can be performed with native operating system tools.Software download

EAD ResourcesWe've assembled some resources to help contributors to the Online Archive of California (OAC) with building and managing EAD finding aids.

CDL Guidelines for Digital Objects Provides specifications for digital objects prepared by institutions for submission to CDL for preservation and access, through the CDL’s Merritt Digital Repository. It also provides specifications for METS digital objects to be contributed to the Online Archive of California (OAC).

CDL Digital File Format Recommendations This document provides recommendations for creating durable production master files -- comprising images, texts, audio, and video content -- which are also suitable for long-term storage and the creation of appropriate derivative use copies.